Thanks Chuck,
I found FEBO has an article on the 5370B here http://www.febo.com/time-freq/hardware/5370B/index.html As a footnote, my 5335A is rock stable sitting on 10 Mhz all day. Best regards, Mark > Date: Fri, 09 May 2008 10:28:00 -0400 > From: Chuck Harris <[EMAIL PROTECTED]> > Subject: Re: [time-nuts] HP 5370B > To: Discussion of precise time and frequency measurement > <[email protected]> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > That is normal for 5370 type counters. The are time interval counters > that can also measure frequency. Frequency is not their best feature. > > -Chuck Harris > > marks twotoe.com wrote: >> Could someone confirm if this behaviour is normal on a 5370B. >> >> When measuring the output of my standard the 10th and 11th digits are >> constantly changing. >> >> Do I need a 10Mhz low pass filter on the input of the counter to get an >> accurate result or should I just ignore this behaviour? >> >> >> Many thnaks, >> Mark >> _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
